These arguments always strike me as coming from people who don't actually understand what design is. The folks who think that design is the font face, the weight of lines, the colors used. Those are all facets of design, but they are essentially just tools to accomplish the goal: experience and engagement. What you are noticing are just trends, and this is nothing new. Look back over the history of even just twentiet…
No, this isn't true this time. I have been using iOS 7 on iPhone 5 for a day now, and I have mixed feelings. I have always trusted Apple to 'get it right' and be delighted with thought-out details and just no-frills great UX. I know it's Beta, but it honestly looks and feels like Android with a bit of lag here and there, some stuttering animations, confusing unlock and answer call screens, too thin fonts for my taste…
It's utterly fantastic. What is surprising is how much all the apps have changed - all the functionality was seemingly ripped apart and put back together.
It's definitely rough. This is a beta, not a Google "let's call it beta even though it's actually finished". A real beta. With plenty of bugs; occasional crashes. Lots of graphics glitches esp. when using 3rd party apps. Seems to use tons of battery.
If you don't understand what a beta is, better don't install this. Beta means buggy.
But as far as the UI is concerned, it's fantastic. It's beyond that - it feels as if a great weight has been lifted from iOS and I can feel the blood, sweat, and tears, as well as enthusiasm and sheer euphoria, of the people putting this together in an insane timeframe. 7 months!
Sure there's inconsistencies in the design - those will get fixed over time, probably before the GM; there's so many glitches - I expect some will remain past GM. There's some weirdness that'll only get fixed next year.
But all in all, this is one fantastic update. This is Apple at its best. If you can't see that, I feel sorry for you, but I also feel confident that you will see it in hindsight, next year, when everyone will talk about how Apple re-invented itself yet again with iOS7.
Samsung meanwhile is already hard at work copying all those features, expect them to pop up in Android within the next 6 months. Parallax background will be first.